Mercedes-Benz Sprinter 907 2018 Operating Instructions Manual page 294

292
Breakdown assistance
Tighten nuts 6 for the wires with torque
#
specified on the prefuse box.
Mercedes-Benz recommends that you have the
battery replaced at a qualified specialist work‐
shop, e.g. a Mercedes-Benz Service Centre.
If you want to replace the starter battery yourself,
observe the following notes:
Always replace a defective starter battery
R
with a starter battery which meets the spe‐
cific requirements of the vehicle.
Use attachments such as the breather hose,
R
angle piece or terminal cover of the starter
battery to be replaced.
Make sure that the vent hose is always con‐
R
nected to its original opening on the battery
side.
Fit the existing or newly supplied stop plugs.
Otherwise, gases or battery acid could
escape.
Make sure that the detachable parts are con‐
R
nected in the same way as before.
Disconnecting the auxiliary battery in the
engine compartment
* NOTE Damage to the electrical assembly
If you disconnect the starter battery before
you have switched off the engine and
removed the key from the ignition lock, elec‐
trical assemblies could be damaged.
Switch off the engine and remove the
#
key from the ignition lock. Then remove
the battery terminals from the starter
battery. Make sure you always discon‐
nect the starter battery in the battery
case in the left-hand footwell first. Oth‐
erwise, electrical assemblies, e.g. the
alternator, could be damaged.
* NOTE Damage to the vehicle's electron‐
ics
If you do not disconnect the auxiliary battery
as described here, the vehicle's electronics
could be damaged.
Always disconnect the auxiliary battery
#
in the following sequence, and do not
reverse the battery terminals under any
circumstances! Otherwise, the vehicle's
electronics could be damaged.
5
Observe the safety measures and protection
#
notices when disconnecting the auxiliary bat‐
tery ( page 286).
→
Switch off all electrical consumers.
#
Switch off the engine and the power supply.
#
Open the bonnet (
#
First loosen and remove the negative terminal
#
clamp on the auxiliary battery so that the
clamp is no longer in contact with the termi‐
nal.
Remove the positive terminal clamp cover.
#
Loosen and remove the positive terminal
#
clamp.
Disconnecting the auxiliary battery under the
co-driver's bench seat
* NOTE Damage to the electrical assembly
If you disconnect the starter battery before
you have switched off the engine and
removed the key from the ignition lock, elec‐
trical assemblies could be damaged.
Switch off the engine and remove the
#
key from the ignition lock. Then remove
the battery terminals from the starter
battery. Make sure you always discon‐
nect the starter battery in the battery
case in the left-hand footwell first. Oth‐
erwise, electrical assemblies, e.g. the
alternator, could be damaged.
page 270).
→